CA1242487A - Systeme de communication par satellite a faisceau dirige - Google Patents

Systeme de communication par satellite a faisceau dirige

Info

Publication number
CA1242487A
CA1242487A CA000518673A CA518673A CA1242487A CA 1242487 A CA1242487 A CA 1242487A CA 000518673 A CA000518673 A CA 000518673A CA 518673 A CA518673 A CA 518673A CA 1242487 A CA1242487 A CA 1242487A
Authority
CA
Canada
Prior art keywords
link
satellite
radiating elements
array
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000518673A
Other languages
English (en)
Inventor
Harold A. Rosen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DirecTV Group Inc
Original Assignee
Hughes Aircraft Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Application granted granted Critical
Publication of CA1242487A publication Critical patent/CA1242487A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/22—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation in accordance with variation of frequency of radiated wave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Relay Systems (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)
CA000518673A 1985-10-01 1986-09-19 Systeme de communication par satellite a faisceau dirige Expired CA1242487A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US782,770 1985-10-01
US06/782,770 US4972151A (en) 1985-10-01 1985-10-01 Steered-beam satellite communication system

Publications (1)

Publication Number Publication Date
CA1242487A true CA1242487A (fr) 1988-09-27

Family

ID=25127137

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000518673A Expired CA1242487A (fr) 1985-10-01 1986-09-19 Systeme de communication par satellite a faisceau dirige

Country Status (5)

Country Link
US (1) US4972151A (fr)
EP (1) EP0238621B1 (fr)
JP (1) JPS63501673A (fr)
CA (1) CA1242487A (fr)
WO (1) WO1987002191A1 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819227A (en) * 1986-08-14 1989-04-04 Hughes Aircraft Company Satellite communications system employing frequency reuse
US4823341A (en) * 1986-08-14 1989-04-18 Hughes Aircraft Company Satellite communications system having frequency addressable high gain downlink beams
AU604082B2 (en) * 1986-12-22 1990-12-06 Hughes Electronics Corporation Steerable beam antenna system using butler matrix
US5233358A (en) * 1989-04-24 1993-08-03 Hughes Aircraft Company Antenna beam forming system
US5239668A (en) * 1989-11-06 1993-08-24 Motorola, Inc. Satellite signalling system
CA2067809A1 (fr) * 1989-11-06 1991-05-07 Walter Lee Davis Systeme de signalisation pour les communications par satellite utilisant un faisceau a section variable
US5239670A (en) * 1989-11-30 1993-08-24 Motorola, Inc. Satellite based global paging system
US5081464A (en) * 1990-07-12 1992-01-14 Hughes Aircraft Company Method and apparatus for producing multiple, frequency-addressable scanning beams
US5515378A (en) * 1991-12-12 1996-05-07 Arraycomm, Inc. Spatial division multiple access wireless communication systems
GB2293725B (en) * 1994-07-22 1999-02-10 Int Maritime Satellite Organiz Satellite communication method and apparatus
US6463295B1 (en) 1996-10-11 2002-10-08 Arraycomm, Inc. Power control with signal quality estimation for smart antenna communication systems
US7035661B1 (en) 1996-10-11 2006-04-25 Arraycomm, Llc. Power control with signal quality estimation for smart antenna communication systems
US6275543B1 (en) 1996-10-11 2001-08-14 Arraycomm, Inc. Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing
US6745028B1 (en) * 1997-07-16 2004-06-01 Ico Services Limited Satellite mobile telephone cell departure prediction
US7299071B1 (en) 1997-12-10 2007-11-20 Arraycomm, Llc Downlink broadcasting by sequential transmissions from a communication station having an antenna array
US6615024B1 (en) 1998-05-01 2003-09-02 Arraycomm, Inc. Method and apparatus for determining signatures for calibrating a communication station having an antenna array
US6600914B2 (en) 1999-05-24 2003-07-29 Arraycomm, Inc. System and method for emergency call channel allocation
US6141567A (en) 1999-06-07 2000-10-31 Arraycomm, Inc. Apparatus and method for beamforming in a changing-interference environment
US7139592B2 (en) 1999-06-21 2006-11-21 Arraycomm Llc Null deepening for an adaptive antenna based communication station
US6985466B1 (en) 1999-11-09 2006-01-10 Arraycomm, Inc. Downlink signal processing in CDMA systems utilizing arrays of antennae
JP2001203641A (ja) * 2000-01-20 2001-07-27 Nec Corp 空間光伝送装置
US7062294B1 (en) 2000-09-29 2006-06-13 Arraycomm, Llc. Downlink transmission in a wireless data communication system having a base station with a smart antenna system
US6982968B1 (en) 2000-09-29 2006-01-03 Arraycomm, Inc. Non-directional transmitting from a wireless data base station having a smart antenna system
US6795409B1 (en) 2000-09-29 2004-09-21 Arraycomm, Inc. Cooperative polling in a wireless data communication system having smart antenna processing
US11072441B2 (en) * 2017-03-03 2021-07-27 Northrop Grumman Systems Corporation Stackable spacecraft

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331071A (en) * 1965-12-23 1967-07-11 James E Webb Satellite communication system
JPS5037478B2 (fr) * 1972-05-25 1975-12-02
JPS5547704A (en) * 1978-10-03 1980-04-04 Toshiba Corp Multi-beam antenna
FR2517626A1 (fr) * 1981-12-04 1983-06-10 Europ Agence Spatiale Engin spatial orbital, notamment satellite, a missions multiples
JPS58114604A (ja) * 1981-12-28 1983-07-08 Mitsubishi Electric Corp マルチビ−ム電子走査アンテナ

Also Published As

Publication number Publication date
JPS63501673A (ja) 1988-06-23
EP0238621A1 (fr) 1987-09-30
WO1987002191A1 (fr) 1987-04-09
US4972151A (en) 1990-11-20
EP0238621B1 (fr) 1991-04-24

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THOMPSON Frequency addressable beams for mobile communications
SIDELOBES Thefollowing pictures are of concepts that were studied for application in SpaceBasedRadar (SBR) systems. Theseantenna systemswere for low Earth orbit andrequired large fields of view (FOV). Theyincluded both space-fed and corporate-fed arrays.
Kummer et al. Study of spacecraft antenna systems Interim engineering report/final/, Oct. 1963-Jan. 1965

Legal Events

Date Code Title Description
MKEX Expiry